[mono-cecil] MakeGenericType and MakeArrayType on TypeDefinition ?

[impworks]

Hello!

Is there any way to programmatically turn a type described by
TypeDefinition to an array of that type?

I'm trying to create a compiler for a language, in which the user can
declare variables as:

<code>
int a;
int[] b;
int[][] c;
</code>

and so on. The trick is, I don't know the arity of the the array the
user desires to create, and the type may be built-in or user-defined
too.
When working with System.Type, I can create an array using this block
of code:

<code>
var someType = typeof(MyType);
var arrayType = someType.MakeArrayType();
</code>

The same way, I need to be able to wrap a type into a List<T>.

Is there any analog that works like this on a TypeDefinition instead
of Type? Or maybe I can get a Type out of TypeDefinition, process it
and create a new TypeDefinition by using Assembly.MainModule.Import() ?

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mono-cecil